Wall-mold construction



1929- s. M. PONTIERE WALL MOLD CONSTRUCTION Filed Dec. 14, 1926 Patented Aug. 27, 1929.

UNITED STATES STANLEY M. PONTIERE, OCEAN CITY, NEW JERSEY.

WALL-MOLD CONSTRUCTION.

Application filed December 14, 1926. Serial No. 154,717.

The invention relates to devices for use in constructing molds for plastic walls to. be built in situ, and particularly to means for supporting mold elements upon newly finished wall portions in a quickly releasable manner, so that a wall may be tamped or poured in courses, moving the mold parts upward into place upon the top of each finished course. It is also of that character by which hollow walls may be constructed, and the mold fixing and supporting members may be left in the finished wall as ties.

It is an important aim of the invention-to enable the release of the mold sides without requiring the use of tools. Another important purpose is to present a mold retaining member which is at once adapted to use in constructing hollow or solid walls, and to the construction of walls of various thicknesses.

It is a purpose also to present a novel method of procedure'in the erection of mold and construction of the wall.

Additional objects, advantages, and features of invention reside in the construction arrangement and combination of parts as may be understood from the following de' scription and accompanying drawing, in which Fig. 1 is a perspective View of one of the mold side supports.

Fig. 2 is a cross section of a wall partly constructed and in course of erection in accordance with my invention.

Fig. 3 is an isometric perspective of the mold side support and tie.

Fig. 4 is a similar View of a manner of using the invention.

There is illustrated in Fig. 2 a wall mold retainer and tie, which may be produced in various ways, but as shown is especially adapted to be cast in iron. It consists of amain or cross bar 11 intended to extend transversely of the form, from which there are projected a plurality of mold engaging plates 12, arranged in four pairs, and in parallel relation transversely of the bar 11 and at right angles thereto. They are as nearly planiform as possible, but may be tapered toward the vertical edges for convenience in removal of the iron castings from the foundry mold. The retainer 10 is a form used in casting a double wall. For ordinary work, the plates 12 are about four inches in length, and boards ten inches in width are customarily used for the forms, also 12-inch boards. The plates of each pair are preferably spaced so as to not allow too loose a fit of the form boards therein as will be explained.

As seen in Fig. 3 the mould mounting and retainer 13, has also four downwardly extending plates 14 similar to the plates 1-2, but having a differentuse and arrangement as will be explained.

In the use of the structure shown, in case it is desired to build a double wall beginning on the foundation, the retainer 10 with a suitable number of additional similar ones all having the arms 14 omitted or removed, is laid upon the foundation in the position shown at 10 in Figure 1 the others being spaced suitably along the proposed base of the wall, and all being carefully alined, so that when boards 15 are set therein in the relation shown in Fig. 2, the inner faces between each pair of boards will coincide with the planes of the faces of the proposed wall. Complete retainers are then inverted and their plates 12 similarly engaged with the upper edges of the boards. Owing to the rigid structure of the retainers and the length of the plates 12, they serve to accurately position the sides of the form in vertical position, and by using them in suitable number the form is amply stiffened to retain its proper form under the pressure of the concrete or other material which may be introduced thereinto.

It is my practice to use a rather dry mix of concrete, and tamp this thoroughly into the mold, and accurately level the top of the course by drawing a straight edge along the top of the mold. With proper materials, by

the time a course is laid around a building the first portion cast will have set sufficiently to enable the removal of the form, under this particular method. But with materials in the concrete requiring a longer period to set, my invention may be utilized after another method as will be explained. /V hen the mold boards are to be removed, the upper retainers are lifted off the form, and the boards 15 may then be lifted from place and laid aside. Betainers 13 are then put in place erect upon the top of the cast in the same positions previously occupied by the removed retainers, and the boards 15 again positioned to form a second mold section, this time being set in the members 13. Additional retainers are engaged with the upper edges of the boards as before. The plates 14 are so spaced and offset slightly from the plates 12 immediately thereabove, that they slightly clear the surfaces of the finish wall formed by the corresponding plates 12 previously removed, this offset being clearly apparent in Fig. 2.

In case it should be desired to cast a solid wall, two boards only need be set in place in each retainer, these in the outermost pairs of plates 12. For the top retainers, the intermediate two pairs of plates 12 may be broken off, and likewise the two inner plates 14L of the retainers 13 may be removed, the use otherwise corresponding to that described.

Either before removal of the boards 15 from the finished work, or afterward, the outermost plates 12 of the retainers 13 may be broken off, a weakening groove 16 being formed in the bar 11 parallel to the next plate inwardly of the end of the retainer. Thus in case of a cast which is for the moment frangible, the plates holding the boards of the form may be pried off and the boards entirely freed from the work without damage to incompletely set concrete.

The retainers may also be provided with additional weakening grooves 17 in the bar 11 and in. the plates 12, as indicated in Fig. 41, enabling ready adaptation of the retainers to various sizes of walls and other uses.

In case of the use of wet concrete mixtures requiring too long a period to set for the immediate removal of the forms, after positioning and filling of the first form course, the top retainer may be replaced by a retainer 17 (Fig. l), in which plates 18 are formed on the lower side in the same spacing and relation as the plates 12 of the retainer 13, and in addition upwardly projecting plates 12 are also formed thereon as before described. The boards are allowed to remain in place while additional courses are laid above, and may be removed at any time by driving a wedge between the plates and the form boards.

The plates 12 extend over a substantial part of the width of the mold boards 15, so that warping of the latter is prevented while in the form, and a better approximation of a true planiform surface thus secured in the cast. lVhile I have used wooden boards in the practice of my invention, with good revolved without damage to incompletely set concrete.

The elements 10 and 13 when left in the wall as indicated, form a bond of great rigidity and strength between the inner and outer elements of multiple wall construction,

and are liable in a minimum degree to failure by corrosion and heat as compared tosheet metal devices.

I claim:

1. A mold form and two-wall-tie element'" comprising a bar adapted to be set transversely in a wall form, a plurality of integral plates projected therefrom in pairs to receive mold boards therebetween and retain the boards in operative position, the plates being in a number and relation to engage mold pieces for a plurality of parallel wall parts, and certain of the plates .of innermost pairs being weakened and frangible adjacent their bases, for the purposes described.

2. A mold form and wall-tie element comprising a bar adapted to be set transversely of the nfold, a plurality of plates projected upwardly therefrom in pairs, to receive mold boards therebetween and retain the boards in operative position, said bar having additional plates on its lower side corresponding with the plates at the upper side adjacent the wall spaces in slightly offset relation to the wall space, whereby to smoothly engage a finished wall, as described.

In testimony whereof I affix my signature.

STANLEY M. PONTIERE. 

